It's probably a good idea to have your boyfriend sign a promissory note agreeing to repay the amount he borrowed on a certain schedule (ex: $300 per month for 12 months). This way if he defaults and the two of you don't work as a couple, you can sue him for the amount owed and will have proof that the debt was a loan and not a gift.
Answered on Oct 15th, 2013 at 8:57 PM